It's great to have so many focus for the same problem. Thanks to all of you.

I wanted to ask about this one in particullar:

Originally Posted by simplependulum

We have

Let and we have

EDIT: I think it is unnecessary to evaluate only the right hand limit .

Are you using Taylors polinomial there? I haven't seen it yet, but its good to know it can be solved that way.

Bye there.

EDIT: Now that I've taken a deeper look on tonios reasoning i've seen that he proceeded right and didn't forget a thing. It's just that as he started by reasoning the logaritm part I thought that he forgot the denominator, but now I see that he didn't.